Updates for all angular.io links to the new angular.dev domain. Additionally, adjustment to new resources where the equivalent does not exist on the new site (e.g. Tour of Heroes tutorial)
This change provides more fine-grained warnings during the `update-module-and-target-compiler-options` migration for V10.0 in the event a TypeScript configuration file could not be updated. The `JSONFile` utility class was also augmented to directly throw when created to ensure that the `content` property is always initialized.
TypeScript 3.9 requires tslib 2.0.0, with this change we;
- Update tslib existing and new workspaces to use tslib 2.0.0
- Update new and existing libraries to use tslib 2.0.0 as a direct depedency.
Tslib version is bound to the TypeScript version used to compile the library. Thus, we shouldn't list `tslib` as a `peerDependencies`. This is because, a user can install libraries which have been compiled with older versions of TypeScript and thus require multiple `tslib` versions to be installed.
Closes: #17753
Reference: TOOL-1374
